Vanadinite crystals (orange) on barite; Morocco Image #4003 4800 X 3200
Macro photograph of a polished slab containing chrysocolla (blue) and malachite (green) from the Bagdad copper mine in Arizona Image #3169 4772 X 3187 pixels
Macro photograph of the detail in a piece of Birds Eye rhyolite; a rock of volcanic origin Image #2369 4800 X 3200 pixels
